Enantioselective microbial hydrolysis of dissymmetrical cyclic carbonates with disubstitution
作者:Masaki Nogawa、Satomi Sugawara、Rie Iizuka、Megumi Shimojo、Hiromichi Ohta、Minoru Hatanaka、Kazutsugu Matsumoto
DOI:10.1016/j.tet.2006.09.066
日期:2006.12
Enantioselective microbial hydrolysis of C1 and C2 dissymmetrical cyclic carbonates with disubstitution (methyl and another groups) has been developed. Pseudomonas diminuta (FU0090), a bacterium, efficiently catalyzes the hydrolysis of five-membered cyclic carbonates. While the trans-substrates are hydrolyzed with low enantioselectivities and/or reactivities, the microbe hydrolyzes the cis-substrates
已经开发了具有解离作用(甲基和另一个基团)的C 1和C 2不对称环状碳酸酯的对映选择性微生物水解。假单胞菌(FU)(Pseudomonas diminuta)(FU0090)可有效催化五元环状碳酸酯的水解。当反式底物以低对映体选择性和/或反应性水解时,微生物水解具有很高对映体选择性的顺式底物以提供相应的几乎光学纯的抗-(2 R,3 S)-二醇。另一方面,六员反式尽管顺式底物的水解产生外消旋化合物,但对环碳酸酯被对映选择性地水解以提供相应的旋光性顺式-(2 R,4 R)-二醇。在所有情况下,该酶都优选(R)-对映体作为带有甲基的碳原子。